{ "document": { "aggregate_severity": { "text": "High" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/ubuntu18.04els/vex/2023/cve-2023-40225-els_os-ubuntu18_04els.json" } ], "tracking": { "current_release_date": "2026-06-13T08:41:19Z", "generator": { "date": "2026-06-13T08:41:19Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-40225-ELS_OS-UBUNTU18.04ELS", "initial_release_date": "2023-08-10T21:15:00Z", "revision_history": [ { "date": "2023-08-10T21:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2025-11-29T14:45:54Z", "number": "2", "summary": "Official Publication" }, { "date": "2025-12-23T22:15:38Z", "number": "3", "summary": "Update document" }, { "date": "2026-06-13T08:41:19Z", "number": "4", "summary": "Update document" } ], "status": "final", "version": "4" }, "title": "Security update on CVE-2023-40225" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Ubuntu 18.04", "product": { "name": "Ubuntu 18.04", "product_id": "Ubuntu-18", "product_identification_helper": { "cpe": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*" } } } ], "category": "product_family", "name": "Ubuntu" } ], "category": "vendor", "name": "Canonical Ltd." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.amd64", "product": { "name": "haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.amd64", "product_id": "haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/haproxy@1.8.8-1ubuntu0.13.tuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.amd64", "product": { "name": "haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.amd64", "product_id": "haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/haproxy@1.8.8-1ubuntu0.13.tuxcare.els2?arch=amd64" } } } ], "category": "architecture", "name": "amd64" }, { "branches": [ { "category": "product_version", "name": "haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "product": { "name": "haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "product_id": "haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/haproxy-doc@1.8.8-1ubuntu0.13.tuxcare.els1?arch=all" } } }, { "category": "product_version", "name": "haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "product": { "name": "haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "product_id": "haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/haproxy-doc@1.8.8-1ubuntu0.13.tuxcare.els2?arch=all" } } }, { "category": "product_version", "name": "vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "product": { "name": "vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "product_id": "vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/vim-haproxy@1.8.8-1ubuntu0.13.tuxcare.els1?arch=all" } } }, { "category": "product_version", "name": "vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "product": { "name": "vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "product_id": "vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/vim-haproxy@1.8.8-1ubuntu0.13.tuxcare.els2?arch=all" } } } ], "category": "architecture", "name": "all" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.amd64" }, "product_reference": "haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.amd64" }, "product_reference": "haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els1.all" }, "product_reference": "haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els2.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els2.all" }, "product_reference": "haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.all" }, "product_reference": "vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.all" }, "product_reference": "vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "relates_to_product_reference": "Ubuntu-18" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-40225", "cwe": { "id": "CWE-444", "name": "Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')" }, "notes": [ { "category": "description", "text": "HAProxy through 2.0.32, 2.1.x and 2.2.x through 2.2.30, 2.3.x and 2.4.x through 2.4.23, 2.5.x and 2.6.x before 2.6.15, 2.7.x before 2.7.10, and 2.8.x before 2.8.2 forwards empty Content-Length headers, violating RFC 9110 section 8.6. In uncommon cases, an HTTP/1 server behind HAProxy may interpret the payload as an extra request.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" }, { "category": "other", "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.", "title": "Statement" } ], "product_status": { "known_not_affected": [ "Ubuntu-18:haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.amd64", "Ubuntu-18:haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.amd64", "Ubuntu-18:haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "Ubuntu-18:haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "Ubuntu-18:vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "Ubuntu-18:vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.all" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-40225" }, { "category": "external", "summary": "https://cwe.mitre.org/data/definitions/436.html", "url": "https://cwe.mitre.org/data/definitions/436.html" }, { "category": "external", "summary": "https://github.com/haproxy/haproxy/commit/6492f1f29d738457ea9f382aca54537f35f9d856", "url": "https://github.com/haproxy/haproxy/commit/6492f1f29d738457ea9f382aca54537f35f9d856" }, { "category": "external", "summary": "https://github.com/haproxy/haproxy/issues/2237", "url": "https://github.com/haproxy/haproxy/issues/2237" }, { "category": "external", "summary": "https://www.haproxy.org/download/2.6/src/CHANGELOG", "url": "https://www.haproxy.org/download/2.6/src/CHANGELOG" }, { "category": "external", "summary": "https://www.haproxy.org/download/2.7/src/CHANGELOG", "url": "https://www.haproxy.org/download/2.7/src/CHANGELOG" }, { "category": "external", "summary": "https://www.haproxy.org/download/2.8/src/CHANGELOG", "url": "https://www.haproxy.org/download/2.8/src/CHANGELOG" } ], "release_date": "2023-08-10T21:15:00Z", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "version": "3.1" }, "products": [ "Ubuntu-18:haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.amd64", "Ubuntu-18:haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.amd64", "Ubuntu-18:haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "Ubuntu-18:haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "Ubuntu-18:vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "Ubuntu-18:vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.all" ] } ], "threats": [ { "category": "impact", "details": "Important" }, { "category": "impact", "date": "2026-06-12T12:57:50.944315Z", "details": "Not impacted: HAProxy 1.8.8 predates the HTX HTTP representation and does not include the code path that forwards empty Content-Length headers, which is the condition behind CVE-2023-40225. This vulnerability applies to HTX-based processing introduced in 1.9 and enabled by default from 2.0, so version 1.8.8 is outside the affected scope.", "product_ids": [ "Ubuntu-18:haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.amd64", "Ubuntu-18:haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.amd64", "Ubuntu-18:haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "Ubuntu-18:haproxy-doc-0:1.8.8-1ubuntu0.13.tuxcare.els2.all", "Ubuntu-18:vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els1.all", "Ubuntu-18:vim-haproxy-0:1.8.8-1ubuntu0.13.tuxcare.els2.all" ] } ] } ] }